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authorSjur Brændeland <sjur.brandeland@stericsson.com>2011-04-11 10:43:51 +0000
committerDavid S. Miller <davem@davemloft.net>2011-04-11 15:08:48 -0700
commit4dd820c088d201e526840c9dbc2f0b87a0a41868 (patch)
treefac7a3a70bd32df3104ae6f1273a727fb0fa006f /net/caif/caif_socket.c
parent73d6ac633c6c0ca703f90db0b808d9593e46aef6 (diff)
caif: Don't resend if dev_queue_xmit fails.
If CAIF Link Layer returns an error, we no longer try to re-build the CAIF packet and resend it. Instead, we simply return any transmission errors to the socket client. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/caif/caif_socket.c')
-rw-r--r--net/caif/caif_socket.c35
1 files changed, 3 insertions, 32 deletions
diff --git a/net/caif/caif_socket.c b/net/caif/caif_socket.c
index 37a4034dfc2..20212424e2e 100644
--- a/net/caif/caif_socket.c
+++ b/net/caif/caif_socket.c
@@ -519,43 +519,14 @@ static int transmit_skb(struct sk_buff *skb, struct caifsock *cf_sk,
int noblock, long timeo)
{
struct cfpkt *pkt;
- int ret, loopcnt = 0;
pkt = cfpkt_fromnative(CAIF_DIR_OUT, skb);
memset(cfpkt_info(pkt), 0, sizeof(struct caif_payload_info));
- do {
-
- ret = -ETIMEDOUT;
- /* Slight paranoia, probably not needed. */
- if (unlikely(loopcnt++ > 1000)) {
- pr_warn("transmit retries failed, error = %d\n", ret);
- break;
- }
+ if (cf_sk->layer.dn == NULL)
+ return -EINVAL;
- if (cf_sk->layer.dn != NULL)
- ret = cf_sk->layer.dn->transmit(cf_sk->layer.dn, pkt);
- if (likely(ret >= 0))
- break;
- /* if transmit return -EAGAIN, then retry */
- if (noblock && ret == -EAGAIN)
- break;
- timeo = caif_wait_for_flow_on(cf_sk, 0, timeo, &ret);
- if (signal_pending(current)) {
- ret = sock_intr_errno(timeo);
- break;
- }
- if (ret)
- break;
- if (cf_sk->sk.sk_state != CAIF_CONNECTED ||
- sock_flag(&cf_sk->sk, SOCK_DEAD) ||
- (cf_sk->sk.sk_shutdown & RCV_SHUTDOWN)) {
- ret = -EPIPE;
- cf_sk->sk.sk_err = EPIPE;
- break;
- }
- } while (ret == -EAGAIN);
- return ret;
+ return cf_sk->layer.dn->transmit(cf_sk->layer.dn, pkt);
}
/* Copied from af_unix:unix_dgram_sendmsg, and adapted to CAIF */